con·for·ma·tor \ˈkänfərˌmād.ər\noun orcon·for·ma·teur\ˌkänˌfȯrməˈtər\ (-s) Etymology: French conformateur, from conformer to conform (from Latin conformare) + -ateur -ator : an apparatus for taking the conformation of a thing (as of the head for fitting a hat)